Etymology

Ambrosius comes from the Greek word "ambrosia" meaning food or drink of the gods. It is also referred as nectar, which is sweet and bestows immortality. A flume is an artificial channel for the flow of water.

Also in the novel Slughorn said that Ambrosius sent a hamper of his favourite sweets, which were crystallised pineapple, every birthday, while on the original script from the film Slughorn said that Ambrosius sent him a hamper of chocolate each birthday. This is possibly why it was cut from the film, as it contradicts the novel and would totally ruin later events, such as Slughorn's memory about the Slug Club dinner with Tom Riddle, in which Tom gave Slughorn crystallised pineapple.